Enclosure sees NCO losing plot, oddly (6)

I believe the answer is:

corral

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'enclosure' is the definition.
(corral is a kind of enclosure)

I can't explain the rest of the clue.

(Other definitions for corral that I've seen before include "Ranch pen" , "Pen for cattle in the US" , "Pen for livestock (US)" , "Shorten (book)" , "Horse enclosure out West" .)

I've seen this clue in The Telegraph.

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